@unpublished{deploy251,
           month = {June},
            type = {Technical Report},
           title = {Mathematical Extension in Event-B through the Rodin Theory Component },
          author = {Michael Butler and Issam Maamria},
       publisher = {Deploy Project},
            year = {2010},
             url = {http://deploy-eprints.ecs.soton.ac.uk/251/}
}

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